Checking And Measuring Machine/Spindle; Spindle 3D Angular Deviation Cycle995 - Siemens SINUMERIK 828D Manual

2.9
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General information on workpiece production
2.9

Checking and measuring machine/spindle

2.9.1 Spindle 3D angular deviation CYCLE995

With this measuring variant, the angularity (parallelism) of a spindle to the machine tool is
measured on a calibration ball. The measurement is performed by combining the sphere
CYCLE997 and outer circle segment CYCLE979 measuring variants.
Based on the measured values, the angular deviation of the spindle to the axis of the plane is
calculated. With the measured angular deviations, the spindle can be mechanically aligned
parallel to the tool axis or the corresponding tables for sag compensation can be updated.
If there are rotary axes, the determined angular data can be used to align the rotary axis. To do
this, the result parameter (_OVR) of CYCLE995 must be used.
Checking the 3D angular deviation with CYCLE995
Select the appropriate machining plane
The 1st measurement of the calibration ball is performed with CYCLE997 and the
measurement is repeated. From two measuring points along the circumference and one
measuring point at the "north pole" of the sphere (highest point), the center point (position of
the ball) is determined. In addition, the diameter of the calibration ball can be determined.
The second measurement is performed with CYCLE979 at the shank of the probe at a
distance of DZ. The center point of the probe shaft in the plane is determined. The angular
deviation in XY is calculated from the results of the two center points in XY and the distance
between the two measurements in Z (for G17).
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and the measuring parameters
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